1. State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, P. R. China
2. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
3. Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng 252000, P. R. China